Characterization of optically pumped interband cascade lasers.

Interband cascade laser (ICL) devices have been optically pumped and the results observed are presented here. The samples being used for this research were grown by molecular beam epitaxy at the Naval Research Laboratory. Light-light curves (output light vs. input light) were obtained using a pulsed Nd:YAG laser and an optical parametric oscillator (OPO) that generated a tunable infrared beam as the pump source. Laser output power was measured as a function of pump intensity at different pump wavelengths ranging from 1800 to 1940 nm. The threshold pump intensity and slope efficiency were also determined from the light-light curves. Additionally, samples with a graphene contact layer were optically pumped and also evidenced lasing characteristics. This demonstrates the feasibility of taking advantage of graphene to make a conducting window for collecting the spontaneous emission for further improvement of ICLs. Some ICL samples were also electrically pumped and light-current (output light vs. injected current) curves were measured, allowing a determination of the threshold current density and characteristic temperature of the devices for temperatures ranging from 78 K to 280 K.

Name thesis:degree_name

M.S.E.C.E.

Level thesis:degree_level

Masters

Grantor

Baylor University.

Year dc:date.issued

2019

Author dc:creator

• Rumman, Nazifa, 1992-

Advisor dc:contributor.advisor

• Olafsen, Linda J.

• Semiconductor lasers.
• ICLs.
• Optical pumping.
• Threshold and efficiency of ICLs.

Statement dc:rights

• Baylor University works are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. Contact libraryquestions@baylor.edu for inquiries about permission.

Language dc:language.iso

en

Handle dc:identifier.uri

https://hdl.handle.net/2104/10718

OAI identifier oai:identifier

oai:baylor-ir.tdl.org:2104/10718